package collections;/*
 * Copyright 2020-2030 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.Objects;
import java.util.function.Consumer;

/**
 * @author Neil Wang
 * @version 1.0.0
 * @date 2021/6/11 9:45 上午
 */
public interface Iterator<T> {

    boolean hasNext();

    T next();

    default void remove() {
        throw new UnsupportedOperationException("remove");
    }

    /**
     * 对每个剩余元素执行制定操作
     *
     * @param action Functional Interface
     */
    default void forEachRemaining(Consumer<? super T> action) {
        Objects.requireNonNull(action);
        while (hasNext()) action.accept(next());
    }
}
